Luminous Landscape Forum

Equipment & Techniques => Digital Cameras & Shooting Techniques => Topic started by: Ben Rubinstein on July 12, 2005, 12:34:01 pm

Title: 1ds2 banding problems
Post by: Ben Rubinstein on July 12, 2005, 12:34:01 pm

I read a report on photo.net of someone who seemed to have the same problem with a 1D mkII to the extent that an entire wedding shot was ruined. The techs seemed to diagnose it as a chip problem that needed to be sent for replacement.

Title: 1ds2 banding problems
Post by: Jonathan Wienke on July 15, 2005, 01:56:23 pm

It's caused by the multiple readout amplifiers in the sensor not being properly calibrated together, so that every eighth row of pixels has a different overall exposure level than the rest. I see a bit of this effect in underexposed ISO 1600 images on my 1D-MkII occasionally, but Neat Image seems to get rid of most of it. If the sample was pushed more than a stop, I'd say the easiest fix is to learn how to expose properly. But if that is a RAW conversion with exposure set at 0, then you'll need to have the camera sent in for sensor recalibration or replacement.

Title: 1ds2 banding problems
Post by: johndoogan on July 11, 2005, 01:53:23 pm

Has anyone else had this banding problem with the 1ds2?
 It shows up as very fine lines close together, sometimes vertical, sometimes horozontal. I suspect it is with polarised images but need to test this. (http://www.digitalcactus.co.nz/1ds2bad.jpg)

Title: 1ds2 banding problems
Post by: matt4626 on July 12, 2005, 04:25:55 pm

Seems to be a chip problem that Canon replaces. If it happens all the time then it's a trip to Canon. I've seen it happen once and not come back but that seemed to be caused by extreme cold temperature and humidity.